TECHNICAL GUIDE SafeGear® MCC 7.2, up to 50 kA arc ......Up to 3 1 1/1 Up to 2 Up to 2 Up to 2 —...

—TECHNICAL GUIDE

SafeGear® MCC7.2, up to 50 kA arc- resistant switchgear

—Medium voltage SafeGear® Motor Control Center: controlling energy for a safe world

— Table of contents

004 Medium voltage SafeGear® MCC Motor Control Center overview

005 Values and benefits

006 Arc-resistant construction

007 SafeGear® MCC features

008 Features construction

009 Main parts

010-014 Contactor compartment

015-016 MCC Controller General overview

017 Optional components

018 Accesories

019-020 MCC electrical features and normal service conditions

021-022 General dimensions

4 S A F EG E A R ® M CC

Pulp & Paper

Oil & Gas

Water

Metallurgy

Industry

Ideally suited for heavy duty applications of medium voltage motors, SafeGear® MCC is the perfect control and protection for your motors and transformers.

Designed with the highest degree of safety and reliability to meet industrial requirements, SafeGear® MCC is suitable for most market needs.

It is equipped with mechanical interlocks, between the removable contactor truck and the front door, to increase operation and maintenance safety.

The withdrawable contactor design eliminates the need for an isolation switch. Due to the reduced number of parts and simple design, handling, maintenance and safety are improved.

A segregated LV instrument compartment with Type 2B arc resistant construction provides a high level of operator safety.

For optimal flexibility, SafeGear® MCC is designed to be used in combination with SafeGear® switchgear.

Featuring galvanized steel construction, hem bending manufacturing techniques, and Delrin® arc-quenching contacts (PT module), SafeGear® MCC is designed with safety, reliability and durability in mind.

SafeGear® MCC is in compliance with following international standards:

• UL 347 Medium voltage AC contactors, controller and

control centers• UL 50/50E Enclosure for electrical equipment• IEEE C37.20. 2 Standard for metal-clad switchgear• IEEE C37.20.7 Guide for test metal-enclosed switchgear for

internal arcing faults• CSA C22.2 No. 253-09 Medium voltage ac contactors, controllers, and

control centers• CSA 22.2 No. 14

Industrial Control Equipment• IBC-2012 / CBC-2013 with Ip =1.0 Seismically Qualified

—Medium voltage SafeGear® MCCMotor control center overview

TECH N I C A L G U ID E 5

SafeGear® arc-resistant Motor Control Center is available in Accessibility Type 2B, in accordance with IEEE C37.20.7. This differentiates ABB from competitors who typically test to Type 2 arc-resistant construction.

SafeGear® MCC construction allows installation of up to two contactors per frame, up to 720 A, optimizing the quantity of frames and maximizing cost savings by more than 15% without considering the additional benefit of footprint reduction.

SafeGear® MCC does not require an additional transition section to be coupled to Safegear, reducing initial investment and required space in the electrical room.

SafeGear® MCC is in compliance with the international standard IEEE C37.20.2 (metal-clad construction) improving safety for the users.

—Values and benefits

—01 Arc-resistant design

—02 Up to two contactors per frame

—03 No transition section required

—04 Metal-clad construction

—01

—03

—02

—04


No electrical system is foolproof. There is always a chance that insulation system deterioration, equipment malfunction or human error will result in an arc fault, with potentially catastrophic con sequences.

When an arc fault occurs in conventional switchgear, the heat of the arc (30,000° C), can melt and even vaporize, compartment materials and components. Flames and hot gases escape and ignite nearby materials. As air temperature increases in the enclosed space, so does the pressure. The rapid pressure build-up is explosive, hurling ob- jects such as doors, panels, and components.

Disastrous arc faults cost managers of large- power installations hundreds of thousands of dollars in lost equipment and downtime, as well as needless deaths and injuries. The images below illustrate the consequences of an arc fault in conventional gear and the advantages of using SafeGear arc-resistant Motor Control Center.

SafeGear® not only meets conventional standards for metal-clad switchgear, it goes beyond ANSI standards to provide the protection of arc-resistant construction.

—01 Non-arc-resistant Motor Control Center 50 kA interruption at LAPEM test lab

—02 Arc-resistant Motor Control Center 50 kA interruption at LAPEM test lab

—Arc-resistant constructionSafeGear® meets today’s challenge of controlling energy for a safe world

During an arc fault, expanding hot gases are carefully routed through a system of vents and flaps, generally through the roof and away from personnel at the front, rear or sides of the switchgear. Doors and panels are reinforced and sealed to withstand the temporary pressure surge until relief vents and flaps operate. Using techniques such as double sidewall and Type 2B construction, damage is contained into the gear inclusive when the low voltage compartment door is open.

SafeGear arc-resistant construction is design tested under actual arc-fault conditions and in conformance to ANSI/IEEE C37.20.7-2007 standards to verify:

• Cotton fabric test panels near the front, rear and sides do not ignite

• Doors and panels remain secure, except for minor distortion

• Components and molten materials are not ejected from the switchgear

• The arc does not burn through to the LV compartment (Type 2B)

• Ground connections remain intact

—01

—02


—SafeGear® MCC features

Product highlights

• Fully compliant to CSA and UL 347 6th edition for Motor Control Centers

• One and two-high construction (available for both 400 and 720 Amps)

• Dead front that avoids access to live parts • Automatic secondary disconnects• Closed door PT racking• SmartRack® remote racking system for

contactors as well as PTs• Optional ground studs for safety during

maintenance• Optional infrared windows available for

temperature monitoring• Optional surge arresters for lightning protection

Standard Service conditions

The listed SafeGear® MCC ratings are applicable under the following conditions:• Minimum ambient temperature: – 5 ° C·• Maximum ambient temperature: + 40 ° C• Maximum 24-hour ambient relative humidity:

85% non-condensing• The normal operational altitude is up to 1000 m

above sea level. For higher altitude applications, please consult your ABB sales representative

• Non-corrosive and non-contaminated atmosphere

Characteristic

Type of construction Metal-clad

Arc-resistant accessibility type 2B

Short-time withstand current (main bus) 50 kA (2sec)

Rated voltage Up to 7.2 kV

Rated contactor current* 400 A

Insulation level/power frequency/lighting impulse BIL* 7.2/20/60 kV

Rated frequency 60 Hz

Rated main bus current* 1200 A, 2000 A or 3000 A

* Ratings given are for service conditions within temperature and altitude limitations as defined by UL 347-2009IEEE C37.20.2-2015 metal-clad standard.


The vacuum contactor and power fuses are mounted on a fully withdrawable rackable truck. This truck assembly eliminates the need for an isolation switch, reducing the number of moving parts and simplifying handling, maintenance and safety.

A blown fuse trip system can actuate a limit switch that will trip the contactor and energize an indicating lamp located on the instrument compartment cell door.

A metallic shutter blocks access to primary contacts when the contactor is in the Disconnected/Test position or removed from the SafeGear® MCC. The motion of the removable contactor opens and closes the shutter automatically.

In the event of an internal arc, the exhaust plenum will safely vent the gases outside of the building. ABB’s Relion® family of protection and control relays for distribution applications provides the performance, safety, and ease-of-use that MCC specifiers and users demand. The Relion 615 and 620 series offer complete protection and control for motors and transformers in MCC applications and are characterized by their flexibility and performance in today’s and future distribution schemes.

—01 Contactor truck assembly

—02 Single-phase protection

—03 Shutters and exhaust plenum—04 Exhaust plenum

—05 Main Bus and supports

—Features construction

Bus supports and insulation materials are flame-retardant, track-resistant and non-hygroscopic. Bus bars are made of copper and have fully rounded edges. The standard bus insulation is made of a solid epoxy coating standard (heat-shrinkable tubing is an available option).

Connection joints, as well as bus bars, are silver-plated (tin plating is an option).

Current limiting power fuses are installed with the withdrawable contactor and are suitable for use with motor, capacitor or transformer applications.Power fuses for motor protection (Type R) will be equipped with bolted type connection. Optional power fuses for transformer protection (Type E) equipped with bolted type connection are also available.

SafeGear® MCC uses Delrin arc-quenching contacts for PT contacts. A sleeve with a round conductor probe is inserted into a receptacle with recessed contacts. Due to its unique properties, Delrin performs as self-lubricating contacts, arcs created during load break conditions are extinguished by a gas emitted by the Delrin material as it heats. The PT contact design also includes a shutter assembly as standard.

—01

—02

—03

—04

—05


—Main parts

SafeGear ® MCC side view

Lower contactor compartment

Low voltage compartment

Vent chamber

Upper contactor compartment or PT compartment

Plenum

Power cable compartment

Power cable compartment

Bus compartment

MCC front MCC rear


—Contactor compartment

A typical contactor compartment interior with the line side shutter closed is shown in figure 1. The interlock linkage operates the line side terminal guard piece (shutter). The one-high and two-high designs use a draw-out contactor for 400 or 720 A. The contactor racking system allows two positions, Disconnected-Test (DICONN.) and Connected (CONN.).

The contactor compartment includes interlocks to ensure proper sequencing and safe operation. Interlocks prevent racking while the contactor compartment door is open. The contactor can only be racked into the connected position with the door closed, maintaining the integrity of arc resistance. The door only opens when the contactor is in the disconnected position (DISCONN.). A door padlock is provided as standard to secure the contactor in place. The contactor compartment includes stationary support bushings and primary contacts for coupling with the contactor. Bolted and multipoint latch doors are available.

—01 Contactor compartment overview

—01


Metallic shutter, covered by a polycarbonate barrier, blocks access to primary contacts when the contactor is in the Disconnected-Test position or withdrawn from the cell. The motion of the withdrawable contactor opens and closes the shutter automatically with the contactor’s position and does not depend on gravity. The shutter is driven simultaneously from both sides for smooth, balanced operation.

Interlocks prevent accidental opening of the shutters and access to energized contact stabs. Shutter is available with padlock provision.

Auxiliary switch contacts are actuated by the contactor position, Disconnected-Test (DISCONN.), and Connected position (CONN.). UL listed auxiliary switch is used, minimum 10 amperes, 600 volts AC.

—02 Shutter—03 Truck operated contact (TOC)

—02

—03


The contactor compartment includes a fully automatic secondary connect system, self-aligned, so manual connection is not required.

A secondary connector allows up to 25 pin contacts for control circuit. Connection is continuous during the contactor racking operation.

Control wiring wireway runs along both sides of the contactor compartment and into the control compartment. Ducts covered by galvanized steel create an enclosed wireway. An enclosed channel runs through the lower left side of the contactor compartment to the CT terminals.

A grounding bar placed in the contactor compartment, interacts with the contactor grounding contact. Ground connection is continuous during the contactor racking operation. The ground bar is made of tin plated copper and have round edges.

—04 Automatic secondary connect system—05 Contactor grounding—06 Control wiring wireway

—04

—05

—06


UL recognized strip heaters are provided in the bottom of the contactor compartment to reduce condensation and dampness in humid environments. Strip type heaters are used in various combinations. Power is provided by control power transformers.

All protection and control devices are mounted in a specific low voltage compartment. Each low voltage control compartment is completely isolated and segregated from the medium voltage compartment according to metal-clad construction guidelines. This ensures safety for operations and maintenance personnel while they work on control and auxiliary circuits.

Devices and control switches are mounted on the door for easy readability and convenient access. Devices that do not require immediate access are mounted inside the compartment. The overall dimensions of the compartment are 30 inches wide, 19 or 57 inches high and 15 inches deep.

The power cable compartment is fully segregated from the other compartments. Located at the rear of the MCC, the cable compartment is segregated from the lower and upper compartments.

For lower or upper compartments, cable entry is rear either bottom or top. Easily accessible 2-NEMA cable lugs simplify power cable installation. The cable compartment has enough space for stress cones. Multiple cables that do not exceed the next dimensions may also be used.

—07 Heater assembly—08 Low voltage comparment—09 Cable compartment

—07

—08

—09

Rating power (W) Rating voltage (V) Part number

250 240 OT1202PCN129728

500 240 OT1205PCN129760


The available main bus ratings are 1200, 2000 and 3000 A. The main bus compartment can be accessed from the back by unbolting the rear covers. Bus supports and insulation materials are flame-retardant, track resistant and non-hygroscopic. Bus bars are made of copper and have fully round edges. Bus bars and connections are silver-plated (tin-plating is available as an option) and epoxic hysol insulation is standard (heat-shrinkable tubing insulation is an option).

SafeGear® MCC uses Delrin arc-quenching contacts for PT contacts. A sleeve with a round conductor probe is inserted into a receptacle with recessed contacts. Due to its unique properties, Delrin performs as self-lubricating contacts, arcs created during load break conditions are extinguished by a gas emitted by the Delrin material as it heats. The PT contact design also includes a shutter assembly as standard.

The plenum is provided to exhaust gases during an arc fault condition to the exterior of the building. The plenum is located above the upper contactor compartment and bus and cable compartments. The plenum construction, with external flanges, makes it easy to do field installation.

Each MCC lineup has a master nameplate, typically located on the horizontal wireway door of the left most section. Each MCC lineup is labeled with operation and warning labels.

—10 Main bus—11 PT compartment—12 Plenum—13 MCC

—10

—11

—12

—13


—MCC ControllerGeneral overview The SafeGear® MCC Controller is a magnetically actuated and latched controller capable of a very high number of operations due to its robust design. Controller’s ratings are 400 A and 720 A and NEMA Class E2. It conforms to latest international standards including UL 347, ICS3 part 2.

Controller features• Fuse status indicator• Position indicator• Operation counter• Controller status• Local trip on the front side• Blown fuse mechanism• Extraction truck

Contactor model HCV-5HA HCV-5HAL (Latched type) HCV-6KAU HCV-6KALU* (Latched type)

Rated voltage 2400/4200/6900 V (7.2 kV Max) 2400V/4200/6900 V (7.2 kV Max)

Rated current 400 A 720 A

Interrupting capacity7000A RMS Symmetrical @5000V Max.

7200 A4500A RMS Symmetrical @7200V Max.

Peak withstand current 15.8 kA 20 kA

Impulse withstand 60 kV

Permissible switching 1200/Hour 300/Hour 600/Hour 300/Hour

Mechanical life operations 2,500,000 250,000 1,000,000 200,000

Electrical life operations 250,000 250,000 200,000

Closing time 50-110 ms 80-120 ms

Opening time 10-60 ms 35-85 ms

Arcing time 10 ms or less

Pick-Up voltage AC or DC 70% (Cold) to 85% (Hot) AC or DC

Drop-Out voltage AC or DC 40% (Cold) to 50% (Hot) AC or DC

Rated control voltage AC 115/120 or 230/240 V 50/60 Hz 100-240V AC

Rated control voltage DC 120/125 or 240/250 V 100-240V DC

Trip voltage - 24, 32, 48 ,125, 250 VDC - 24, 32, 48 ,125, 250 VDC

Control circuit burden (Closing) 5.4 A peak @ 120 VAC, 670 VA (AC), 700 W (DC) 6 to 7.0 A @ 120 VAC, 840 VA (AC), 875 W (DC)

Control circuit burden (Holding) 0.12 A Avg. @ 120 VAC,85 VA (AC), 85 W (DC) 0.8 to 1 A @ 120 VAC 48 VA

Auxiliary contact arrange 3 N.O. - 3 N.C. 2 N.O.-2 N.C. 3 N.O.-3 N.C. 2 N.O.-2 N.C.

Auxiliary contact rating 10 A, 600 V (NEMA Class A600)


Contactor model

Mersen catalog umber

5.08kV 7.2kV

Size Continuousampere rating

No. of barrels

Mersen catalog number

Size Continuous ampere rating

No. of barrels

A051B1DAR0-2R 2R 70 1 A072B1DAR0-2R 2R 70 1

A051B1DAR0-3R 3R 100 1 A072B1DAR0-3R 3R 100 1

A051B1DAR0-4R 4R 130 1 A072B1DAR0-4R 4R 130 1

A051B1DAR0-6R 6R 170 1 A072B1DAR0-5R 5R 150 1

A051B1DAR0-9R 9R 200 1 A072B1DAR0-6R 6R 170 1

A051B1DAR0-12R 12R 230 1 A072B1DAR0-9R 9R 200 1

A051B2DAR0-18R 18R 390 2 A072B1DAR0-12R 12R 230 1

A051B2DAR0-24R 24R 450 2 A072B1DAR0-19R 19R 300 1

A051B2DAR0-32R 32R 600 2 A072B1DAR0-18R 18R 390 2

A051B2DAR0-38R 38R 700 2 A072B1DAR0-24R 24R 450 2

A051B3DAR0-48X 48X 750 3 A072B1DAR0-32R 32R 540 2

Transformer

5.5kV 8.25kV

Mersen catalog number Amp. rating No. of barrels Mersen catalog number Amp. rating No. of barrels

A055B1DAR0-10E 10E 1 A083B2DAR0-125E 125E 2

A055B1DAR0-15E 15E 1 A083B2DAR0-150E 150E 2

A055B1DAR0-20E 20E 1 A083B2DAR0-175E 175E 2

A055B1DAR0-25E 25E 1 A083B2DAR0-200E 200E 2

A055B1DAR0-30E 30E 1 - - -

A055B1DAR0-40E 40E 1 - - -

A055B1DAR0-50E 50E 1 - - -

A055B1DAR0-65E 65E 1 - - -

A055B1DAR0-80E 80E 1 - - -

A055B1DAR0-100E 100E 1 - - -

A055B1DAR0-125E 125E 1 - - -

A055B1DAR0-150E 150E 1 - - -

A055B1DAR0-175E 175E 1 - - -

A055B2DAR0-200E 200E 1 - - -

A055B2DAR0-250E 250E 2 - - -

A055B2DAR0-300E 300E 2 - - -

A055B2DAR0-350E 350E 2 - - -

A055B2DAR0-400E 400E 2 - - -

Power fuses

Recognized Component R and E-rated fuses can be used. The following fuses are used with the contactor for motor or transformer applications.

R-rated fuses are intended to provide short circuit protection only. An R-rated fuse is not designed to protect against overloads. Relays used to protect against overloads.

Motor


CT Part numbers

Primary amps SAB-1 SAB-1D SCG-3 SCG-4 SCG-5

50 923A329G01 923A331G01-M 7525A28G01 7525A29G01 7525A30G01

75 923A329G02 923A331G02-M 7525A28G02 7525A29G02 7525A30G02

100 923A329G03 923A331G03-M 7525A28G03 7525A29G03 7525A30G03

150 923A329G04 923A331G04-M 7525A28G04 7525A29G04 7525A30G04

200 923A329G05 923A331G05-M 7525A28G05 7525A29G05 7525A30G05

250 923A329G06 923A331G06-M 7525A28G06 7525A29G06 7525A30G06

300 923A329G07 923A331G07-M 7525A28G07 7525A29G07 7525A30G07

400 923A329G08 923A331G08-M 7525A28G08 7525A29G08 7525A30G08

500 923A329G08 923A331G09-M 7525A28G09 7525A29G09 7525A30G09

600 923A329G10 923A331G10-M 7525A28G10 7525A29G10 7525A30G10

800 923A329G11 923A331G11-M 7525A28G12 7525A29G12 7525A30G12

1000 923A329G12 923A331G12-M 7525A28G13 7525A29G13 7525A30G13

1200 923A329G13 923A331G13-M 7525A28G14 7525A29G14 7525A30G14

1500 923A329G14 923A331G14-M 7525A28G15 7525A29G15 7525A30G15

2000 923A329G15 923A331G15-M - 7525A29G17 7525A30G17

2500 923A329G16 923A331G16-M - 7525A29G18 7525A30G18

3000 923A329G17 923A331G17-M - 7525A29G19 7525A30G19

Selection guide

CTs per Phase

SAB SAB-D SAB + SAB-D SCG-3 SCG-4 SCG-5

Up to 3 1 1/1 Up to 2 Up to 2 Up to 2

—Optional components

—01 Current transformers CT models SAB or SCG by ABB (1-5A output) can be

used. CTs are mounted on the load side bus, provided with insulating tube made of glass polyester GPO-3. Both SAB and SCG arrangements are supported by galvanized steel reinforcements.

—01


—01

—04

—02

—05

—03

—06

Zero sequence CT for MCC is Type BYZ-S by ABB, located on the floor directly under the load terminals for the lower compartment and located at the rear-middle of the frame for the upper compartment.

Bus bar terminals are provided with two holes (2-NEMA) prepared to connect the appropriate lugs. The lug kits can be supplied with each unit as an option.

Surge arresters are the mean of protection of medium voltage AC networks against both multiple atmospheric and switching overvoltages, as well as Very Fast Transients (VFT) to protect transformers, cables, motors and other medium voltage equipment. For indoor installation only, surge arresters can be Polim-D, MWD or Ohio-Brass type. Surge arresters are connected with NATVAR.

A lift truck is required to raise or lower the contactor to or from the upper contactor compartment. The lift truck has wheels for easy maneuvering in restricted space. The contactor has self-contained wheels for easy floor rolling and interlocks to fix the contactor into the lift truck during maneuvering.

The lower contactor compartment has provisions to put a ramp in front of it in order to withdraw the contactor, instead of using a crane or lift truck. This ramp carries the lower contactor outside of the contactor compartment for maintenance or service

—Accesories

Zero sequence CT selection guide

Primary ampererating

Style numberIEEE Relaying accuracy

50 C10 6353C97H01

100 C20 6353C97H02

—01 Ground sensor for lower compartment—02 Ground sensor for upper compartment—03 Surge Arresters—04 Load side terminals—05 Lift Truck—06 Extension Ramp


Intermediate values may be obtained by interpolation.

—MCC electrical features and normal service conditionsMCC Electrical features

Type of construction Type 1 Gasketed

Arc-resistant accessibility type 2B

Short-time withstand current (main bus) 50kA (2 sec)

Rated main bus current 1200 \ 2000 \ 3000 A

Rated contactor current 400 and 720 A

Insulation level/Power frequency/ Lighting impulse 7.2/20/60 kV

Rated main bus current 1200 \ 2000 \ 3000 A

Altitude correction factors (ACF)

Altitude (m) Altitude (ft) ACF for dielectric withstand voltage ACF for continous current

1000 3300 1 1

1200 4000 0.98 0.995

1500 5000 0.95 0.991

1800 6000 0.92 0.987

2000 6600 0.91 0.985

2100 7000 0.89 0.98

2400 8000 0.86 0.97

2700 9000 0.83 0.965

3000 10 000 0.80 0.96

3600 12 000 0.75 0.95

4000 13 000 0.72 0.94

4300 14 000 0.70 0.935

4900 16 000 0.65 0.925

5500 18 000 0.61 0.91

6000 20 000 0.56 0.9

MCC normal operation conditions

Minimum ambient temperature -5°C

Maximum ambient temperature 40°C

Maximum 24 hour ambient relative humidity 85% non-condensing

Normal operational altitude above sea level 1000m

Normal non-corrosive and non-contaminated atmosphere


Utilities and power plants• Substations• Power generation stations• Transformer stations• Switching stations• Main and auxiliary switchgear

Marine applications• Off-shore rigs• Tankers• Ships

Industry• Pulp and paper• Cement• Textiles• Chemicals• Food

• Automotive• Oil and gas facilities• Metallurgy• Rolling mills• Mines

Maximum load ratings for motors

Voltage rating (kV) 2.4 4.16 4.8 6.6 6.9

Contactor rating (A) 400 720 400 720 400 720 400 720 400 720

Induction motors (HP) 1500 2700 2600 4700 3000 5400 4200 7500 4400 7800

Induction motors (kW) 1100 2000 1900 3500 2200 4000 3100 5800 3200 5800

Fuse type 24R 48X 24R 48X 24R 48X 24R 48X 24R 48X

Considerations: Efficiency 95%, PF=0.9, Start time: 10 sec, Service Factor=1.25 (According to NEC), Fusing Factor Protection=1.33.The fuses shown in chart were selected with the values above mentioned and they should only be used as reference. The final selection of power fuses is the responsibility of the customer based on system and load parameters and should be confirmed during engineering stage of the project.

Maximum load rating in kV for transformers

Voltage Rating (kV) 2.4 4.16 4.8 6.9

Contactor Rating (A) 400 400 400 400

Transformers (kVA) 1000 2000 2500 1500

Fuse type 400E 400E 400E 400E

Fuses will conduct transformer magnetizing inrush current of 25 times transformer primary rated current for 0.1 seconds and 12 times for 0.01 second.

Characteristic

Description Standard configurations

Main bus 1200 /2000/3000A

Power cable entry Bottom or Top

Bus bars finish Silver Plated (Standar)

Application 1-High 2-High 1-High and TPs Compartment

Bus bars Insulation Epoxy Hysol

Ground bus With rear extension Without rear extension

Contactor compartment door Without mechanical trip With mechanical trip

Description Options

CTs Up to 3 sets of SAB or 1 of SAB-D Up to 2 sets of SCG-3, SCG-4 or SCG-5

Surge protection Surge arresters

Ground stud Up to 40kA Up to 50kA

Ground sensor Up to 50kA

Stress cones Up to 10” large

Infrared windows Crystal Window (Fluke) Polycarbonate Window (IRIS)

—Maximum load controller ratings

The maximum load ratings for motor and transformer purpose are shown below. This is only a guide. Larger motors and transformers can be supported depending on performance ratings.

—SafeGear® MCC applications

The MCC offers different options and configurations that allow a wide range of industry applications including:

—MCC configurations


—General dimensions

2H Front View

Side View


Anchor entry

Bottom View

Control wiring entry

MCC Weights

Description Approx. weight (lb) Approx. weight (kg)

1-High frame* 1544 700

2-High frame* 1985 900

Plenum per section 111 50

Plenum exhaust box (one per lineup) 155 70

Contactor with fuses 177 80

* Without contactor and instrumentation

The information contained in this document is for general information purposes only. While ABB strives to keep the information up to date and correct, it makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the information, products, services, or related graphics contained in the document for any purpose. Any reliance placed on such information is therefore strictly at your own risk. ABB reserves the right to discontinue any product or service at any time.

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© Copyright 2020 ABB. All rights reserved.

—Your sales contact:www.abb.com/contacts

abb.com/mediumvoltage

TECHNICAL GUIDE SafeGear® MCC 7.2, up to 50 kA arc ......Up to 3 1 1/1 Up to 2 Up to 2 Up to 2 —...

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Transcript of TECHNICAL GUIDE SafeGear® MCC 7.2, up to 50 kA arc ......Up to 3 1 1/1 Up to 2 Up to 2 Up to 2 —...